the other family members are in the hospital. they want to interview them. they have not. tyler's mother had allowed him to sleep that night with relatives. she is speaking out about the son who is being called a hero. let's hear from her. >> they were laying in the bed together trying to get to the window. >> i'm so grateful he went with people he loved an he didn't go alone. they didn't cross over alone. >> i am so glad he was with his best friends. it makes me really proud. it really does. i just want him back. >> the cause of death is undetermined, of course. they do believe it was of an electrical nature. there were space heaters all around in the mobile home and there was no smoke detector. the chief told me that a smoke detector in that small space area could have been heard by everyone. it could have saved lives. >> ultimately, the grown-ups